CHARACTERISTIC OF STRUCTURE,PERFORMANCE AND APPLICATION
  Three-row roller slewing ring has three seat-rings, which separating the upper, lower and radial raceways, via which the load of each row of the rollers maybe specified. it may bear different loads simultaneously and its load capacity is the largest one among the four models.
  Owing to large size of its axle and radius, it is sturdy and especially suitable for heavy-duty machines which require large working diameter, such as buchetwheel excavators, wheeled cranes, deck cranes, port cranes, steel transporters, heavy -duty mobile cranes etc.
Notes1
  1. n1-number of lurbricating holes, evenly distributed, lubricating nipple M10×1GB1152-1153-79.
  2. Mounting hole n-φ, may be replaced with screw hole, tooth width b may be taken as H-h.
  3. Gear force of periphery given in the table is its maximum value, nominal force of periphery is taken 1/2 of the given value.
  4. The trim top coefficient of outer and inner tooth is 0.1 and 0.2, respectively.